Wargame: AirLand Battle

Randomly, in some multiplayer games, when i attempt to select units, instead of picking them one at a time it picks them in groups of 4. My camera controls also go wonky. Instead of WASD moving my camera around the map, it zooms it in and out or rotates left and right.

Same here. I got a similar problem with selecting units - when I just click to select one unit, a random selection of units get selected instead, sometimes from the other end of the game far outside my current view.